Home / 209,972.40-315,614.70-206,035.80

Finding the Fourth Proportional to 209,972.40, 315,614.70 and 206,035.80

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Solution

The fourth proportional to 209,972.40, 315,614.70 and 206,035.80 is: 309,697.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,972.40 : 315,614.70 = 206,035.80 : x
  2. Step 2: Convert to fraction form
    209,972.40/315,614.70 = 206,035.80/x
  3. Step 3: Cross multiply
    209,972.40x = 315,614.70 × 206,035.80
  4. Step 4: Simplify right side
    209,972.40x = 65,027,927,206.26
  5. Step 5: Solve for x
    x = 65,027,927,206.26/209,972.40
  6. Step 6: Final answer
    x = 309,697.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.